Jesus Fernandez Manzano <jesus.manzano@xxxxxxxxxx> wrote:
> The number of spatial streams used when acting as a beamformee in VHT
> mode are reported by the firmware as 7 (8 sts - 1) both in IPQ6018 and
> IPQ8074 which respectively have 2 and 4 sts each. So the firmware should
> report 1 (2 - 1) and 3 (4 - 1).
>
> Fix this by checking that the number of VHT beamformee sts reported by
> the firmware is not greater than the number of receiving antennas - 1.
> The fix is based on the same approach used in this same function for
> sanitizing the number of sounding dimensions reported by the firmware.
>
> Without this change, acting as a beamformee in VHT mode is not working
> properly.
>
> Tested-on: IPQ6018 hw1.0 AHB WLAN.HK.2.5.0.1-01208-QCAHKSWPL_SILICONZ-1
> Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-01208-QCAHKSWPL_SILICONZ-1
>
> Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
> Signed-off-by: Jesus Fernandez Manzano <jesus.manzano@xxxxxxxxxx>
> Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
55b5ee3357d7 wifi: ath11k: fix number of VHT beamformee spatial streams
--
https://patchwork.kernel.org/project/linux-wireless/patch/20220616173947.21901-1-jesus.manzano@xxxxxxxxxx/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
